Misplaced double-track fast locking tracheal tube fixing device

Abstract

This utility model relates to the field of medical auxiliary equipment technology. It provides a misaligned double-track quick-locking endotracheal tube fixation device, aiming to solve the airway management risks associated with traditional endotracheal tube fixations that rely on strap tension and internal hole limitation. These fixations are prone to loosening due to patient agitation and changes in body position, and the straps can easily compress the skin, leading to complications. The device includes: a fixation body that conforms to the face and has a corresponding mouthpiece installation opening (with an installation part and a clamping part on opposite walls); medical straps connecting the fixation body at both ends to limit displacement; and a clamping mechanism corresponding to the installation opening (a sliding push-pull rod connected to the installation part and a clamping block at the end of the push-pull rod). The push-pull rod has a spiral-shaped limiting groove connecting its ends, which, in conjunction with the locking block, prevents reverse rotation; the clamping block and clamping part have matching clamping arc surfaces. This device can stably clamp the endotracheal tube, preventing loosening and compression, is easy to operate, and effectively ensures the patient's airway safety.

Description

Technical Field

[0001] This utility model relates to the field of medical auxiliary equipment technology, specifically to a misaligned double-track quick-locking endotracheal tube fixation device. Background Technology

[0002] Endotracheal intubation is a crucial procedure in clinical medicine to maintain airway patency and ensure respiratory function. It is widely used in scenarios such as respiratory failure, cardiac arrest, and major surgical anesthesia. The stability of the intubation directly affects the patient's airway safety and treatment outcome. Currently, clinically used endotracheal intubation fixators mainly rely on a combination of two fixation methods: one is to wrap a bandage (such as an elastic bandage or cotton bandage) around the patient's head or neck, using the tension of the bandage to restrain the fixator and intubation tube in a preset position; the other is to have an inner hole in the main body of the fixator that matches the outer diameter of the intubation tube, restricting the radial movement of the intubation tube through an interference fit or gap limitation between the inner hole and the outer wall of the intubation tube. However, these fixation structures are easily affected by external factors in practical applications. The tension of the bandage needs to be manually adjusted; if it is too loose, it cannot provide sufficient fixation force, and if it is too tight, it may compress the patient's facial skin, gums, or neck blood vessels, causing complications such as pressure sores and circulatory disorders. At the same time, when the patient is agitated (such as during anesthesia recovery or in a state of impaired consciousness) or changes position (such as turning over or turning the head), the bandage is prone to loosening, displacement, or slippage, directly causing the fixator to lose its restraining effect. Utility Model Content To overcome the above-mentioned defects, the embodiments of this utility model provide a misaligned double-track quick-locking endotracheal tube fixation device, which solves the technical problem that the existing intubation fixation device relies only on the tension of the strap and the inner hole of the fixation device for positioning, and the intubation tube is prone to displacement or even dislodgement due to patient agitation or changes in body position, which poses a risk to airway management.

[0003] According to one aspect, at least one embodiment of the present invention provides a misaligned double-track quick-locking endotracheal tube fixation device, comprising: The main body of the fixator is designed to fit the face and has an installation opening corresponding to the patient's mouth. The opposite side walls of the installation opening are respectively provided with an installation part and a clamping part. The medical bandage is fixedly connected at both ends to the two ends of the fixation device body to limit the displacement of the fixation device body relative to the patient's face; The clamping mechanism is located on the main body of the fixture and has a corresponding installation opening, and is used to clamp the endotracheal tube. The clamping mechanism includes: A push-pull rod is slidably connected to the mounting part. The clamping block is located at one end of the push-pull rod. The clamping block can move closer to the clamping part under the sliding action of the push-pull rod, so as to cooperate with the clamping part to clamp the endotracheal tube.

[0004] For example, in the misaligned double-track quick-locking endotracheal tube fixation device provided in at least one embodiment of the present invention, a guide ridge extending along the sliding direction of the push-pull rod is provided on the upper inner wall of the installation opening; a guide slide rail adapted to the guide ridge is provided on the upper side of the clamping block, and the guide slide rail and the guide ridge slide together.

[0005] For example, in the misaligned double-track quick-locking endotracheal tube fixation device provided in at least one embodiment of the present invention, the push-pull rod is provided with a plurality of axially spaced limiting grooves; a locking block is slidably connected to the mounting part, the sliding direction of the locking block is perpendicular to the axial direction of the push-pull rod, and the locking block is provided with a limiting part that matches the limiting groove. The limiting part can move into any limiting groove under the sliding drive of the locking block to limit the position of the push-pull rod relative to the mounting part.

[0006] For example, in the misaligned double-track quick-locking endotracheal tube fixation device provided in at least one embodiment of the present invention, an elastic element is provided between the locking block and the mounting part. The elastic element is used to provide an elastic force to push the locking block to slide into the limiting groove.

[0007] For example, in the misaligned double-track quick-locking endotracheal tube fixation device provided in at least one embodiment of this utility model, a number of limiting grooves are arranged sequentially along the axial direction of the push-pull rod and connected end to end to form a spiral limiting structure.

[0008] For example, in at least one embodiment of the present invention, the misaligned double-track quick-locking endotracheal tube fixation device has a first clamping arc surface on the side of the clamping block away from the push-pull rod to fit the outer wall of the endotracheal tube.

[0009] For example, in the misaligned double-track quick-locking endotracheal tube fixation device provided in at least one embodiment of the present invention, the first clamping arc surface is provided with a plurality of friction grooves to increase the friction between the first clamping arc surface and the outer wall of the endotracheal tube.

[0010] For example, in the misaligned double-track quick-locking endotracheal tube fixation device provided in at least one embodiment of the present invention, a second clamping arc surface is provided on the side of the clamping part near the clamping block, and the second clamping arc surface is used to clamp and fit against the outer wall of the endotracheal tube.

[0011] For example, in at least one embodiment of the present invention, the staggered double-track quick-locking endotracheal tube fixation device has an operating handle at the end of the push-pull rod away from the clamping block, and the outer wall of the operating handle has anti-slip texture.

[0012] For example, in at least one embodiment of the present invention, a flexible pad is provided on the side of the fixator body facing the patient's face. The flexible pad is a medical sponge pad or a medical silicone pad, and the flexible pad is detachably connected to the fixator body.

[0013] The beneficial effects of the embodiments of this utility model are as follows: In this invention, the main body of the fixator has an installation opening corresponding to the patient's mouth, and the mounting part and clamping part provided on the opposite wall provide a precise installation and clamping basis for the clamping mechanism. With the medical straps connecting the two ends of the fixator main body, the displacement of the main body relative to the face can be stably restricted, avoiding the problem of loosening and displacement of traditional straps when used alone. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this utility model and these drawings without any creative effort.

[0015] Figure 1 This is a schematic diagram of the structure of the misaligned double-track quick-locking endotracheal tube fixation device in one embodiment of the present invention; Figure 2 for Figure 1 A cross-sectional structural schematic diagram of the fixation device in the embodiment; Figure 3 for Figure 2 Enlarged view of point A in the middle; Figure 4 for Figure 1 A schematic diagram of the locking block unlocking push-pull rod state in the embodiment.

[0016] In the figure: 1. Fixator body, 11. Installation opening, 12. Installation part, 13. Clamping part, 2. Medical strap, 3. Push-pull rod, 4. Clamping block, 14. Guide protrusion, 41. Guide slide rail, 31. Limiting groove, 5. Locking block, 51. Limiting part, 42. First clamping arc surface, 421. Friction groove, 131. Second clamping arc surface, 6. Operating handle, 7. Flexible pad. Detailed Implementation The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit its scope.

[0017] To keep the drawings concise, each drawing only schematically shows the parts relevant to the disclosure; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0018] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0019] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0020] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0021] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0022] This utility model relates to the field of medical auxiliary equipment technology, specifically to the fixation of endotracheal tubes in clinical medicine. Endotracheal intubation is a crucial procedure for maintaining airway patency in patients with respiratory failure and cardiac arrest, as well as for ensuring respiratory function during major surgical anesthesia. The stability of its fixation directly determines the patient's airway safety and treatment outcome. Currently, commonly used clinical methods for endotracheal tube fixation rely on a bandage wrapped around the head or neck and secured within the inner hole of the fixator. However, the bandage tension needs manual adjustment; too loose a bandage can lead to fixation failure, while too tight a bandage may compress facial skin or neck blood vessels, causing complications. Furthermore, the bandage is prone to loosening and displacement when the patient is agitated or changes position, posing a risk to airway management.

[0023] like Figure 1 The image shows the misaligned double-track quick-locking endotracheal tube fixation device in this embodiment. The device mainly includes a fixation body 1, a medical strap 2, and a clamping mechanism. The fixation body 1 is designed to fit the patient's face, with its overall contour conforming to the physiological curve of the face, ensuring stability after fitting and avoiding local pressure or loosening due to discomfort. To facilitate the insertion and positioning of the endotracheal tube, the fixation body 1 has an installation opening 11 corresponding to the patient's mouth. On opposite side walls of the installation opening 11 are respectively provided an installation part 12 and a clamping part 13. The installation part 12 is used to install the relevant components of the clamping mechanism, while the clamping part 13 cooperates with the clamping mechanism to clamp the endotracheal tube. The relative arrangement of the two ensures that the clamping force acts directly on the outer wall of the tube, improving the fixation accuracy.

[0024] The two ends of the medical strap 2 are fixedly connected to the two ends of the immobilizer body 1, respectively. In use, the medical strap 2 wraps around the patient's head or neck, restricting the displacement of the immobilizer body 1 relative to the patient's face through its binding effect, providing basic support for subsequent endotracheal intubation. The length of the medical strap 2 can be adjusted according to the patient's head size, ensuring moderate binding force and avoiding problems such as excessive tightness compressing facial skin or neck blood vessels, or excessive looseness failing to provide stable binding, thus adapting to the usage needs of patients of different body types.

[0025] The clamping mechanism is located on the main body 1 of the fixer and is set in relation to the installation opening 11. Its core function is to clamp and fix the endotracheal tube inserted into the installation opening 11. This structure does not rely on the tension adjustment of the strap, which can reduce the risk of fixation failure caused by manual adjustment error. The clamping mechanism includes a push-pull rod 3 and a clamping block 4. The push-pull rod 3 is slidably connected to the mounting part 12 and can slide back and forth along a preset trajectory of the mounting part 12, providing power and guidance for the movement of the clamping block 4. The clamping block 4 is located at one end of the push-pull rod 3 and its position corresponds to the clamping part 13. When the push-pull rod 3 slides along the mounting part 12 toward the clamping part 13, the push-pull rod 3 can drive the clamping block 4 to move synchronously until the clamping block 4 and the clamping part 13 press against the outer wall of the endotracheal tube, thereby clamping the endotracheal tube. When the push-pull rod 3 slides away from the clamping part 13, the clamping block 4 disengages from the endotracheal tube and releases the clamping state. The operation process is simple and intuitive, making it easy for medical staff to adjust quickly.

[0026] like Figure 2 As shown. Optionally, to prevent the clamping block 4 from shifting laterally during the sliding of the push-pull rod 3 and to ensure precise engagement between the clamping block 4 and the clamping part 13, a guide ridge 14 is provided on the upper inner wall of the mounting opening 11. The extending direction of the guide ridge 14 is consistent with the sliding direction of the push-pull rod 3. At the same time, a guide rail 41 adapted to the guide ridge 14 is provided on the upper side of the clamping block 4. The guide ridge 14 is embedded in the guide rail 41 to form a sliding engagement. When the push-pull rod 3 drives the clamping block 4 to slide, the guide rail 41 moves synchronously along the guide ridge 14. The guide ridge 14 forms a lateral constraint on the guide rail 41, which can effectively prevent the clamping block 4 from shifting to both sides of the mounting opening 11, ensuring that the clamping block 4 always moves in the preset direction, and avoiding the problem of uneven clamping force or ineffective clamping of the insertion tube due to shift.

[0027] Furthermore, to ensure that the push-pull rod 3 remains fixed after being adjusted to the target position and to prevent it from sliding due to external forces, thus affecting the clamping effect, the push-pull rod 3 is provided with several axially spaced limiting grooves 31. For example... Figure 3 As shown, a locking block 5 is slidably connected to the mounting part 12. The sliding direction of the locking block 5 is perpendicular to the axial direction of the push-pull rod 3. The locking block 5 is provided with a limiting part 51 that is adapted to the limiting groove 31. When the push-pull rod 3 is adjusted to the target position, the sliding locking block 5 can drive the limiting part 51 to move into any limiting groove 31. Through the interlocking action of the limiting part 51 and the limiting groove 31, the sliding of the push-pull rod 3 relative to the mounting part 12 can be restricted, thereby maintaining the clamping force of the clamping block 4 and the clamping part 13 on the endotracheal tube and avoiding external interference that could cause the clamping to loosen.

[0028] Optionally, to simplify the locking operation and avoid situations where manual locking is forgotten or incomplete, an elastic element (not shown in the figure) is provided between the locking block 5 and the mounting part 12. One end of the elastic element is connected to the mounting part 12, and the other end is connected to the locking block 5. In its natural state, the elastic element provides an elastic force to push the locking block 5 towards the limiting groove 31, keeping the limiting part 51 inclined to be embedded in the limiting groove 31. When it is necessary to adjust the push-pull rod 3, simply slide the locking block 5 away from the push-pull rod 3, compressing or stretching the elastic element to disengage the limiting part 51 from the limiting groove 31; after adjustment, the external force is removed, the elastic element automatically resets and pushes the locking block 5 to move, so that the limiting part 51 automatically embeds into the corresponding limiting groove 31, realizing the automatic locking of the push-pull rod 3, reducing manual operation steps, and improving operation efficiency and reliability.

[0029] Furthermore, several of the limiting grooves 31 are sequentially arranged along the axial direction of the push-pull rod 3 and connected end to end to form a spiral limiting structure (e.g., Figure 3 (As shown). The spiral limiting structure has a vertical abutment surface on the side away from the clamping block 4. This vertical abutment surface is integrally formed with the groove wall of the limiting groove 31, and its planar extension direction is perpendicular to the axis of the push-pull rod 3. When the position of the push-pull rod 3 is adjusted and the limiting part 51 is embedded in the corresponding limiting groove 31, if the clamping block 4 is subjected to a force away from the clamping part 13 due to patient agitation or external force interference, this force will be transmitted to the push-pull rod 3 and cause the push-pull rod 3 to have a reverse rotation tendency. At this time, the vertical abutment surface can tightly abut against the limiting part 51 with a matching shape. Through the blocking effect of the limiting part 51 on the vertical abutment surface, the reverse rotation tendency of the push-pull rod 3 is directly counteracted, so as to avoid the reverse rotation of the push-pull rod 3 causing the clamping block 4 to move away from the clamping part 13, thereby preventing the device from releasing the clamping of the endotracheal tube.

[0030] Meanwhile, the spiral limiting structure allows for slight adjustment of the axial displacement of the push-pull rod 3 by rotating it after the limiting part 51 enters the spiral limiting structure formed by the limiting groove 31. Since the limiting groove 31 is spirally distributed, when medical personnel rotate the push-pull rod 3 around its axis before the limiting part 51 is completely removed from the limiting groove 31, the limiting part 51 will slide along the track of the spiral limiting structure. The spiral helix angle of the spiral track will convert the circumferential rotation of the push-pull rod 3 into a small axial displacement. This allows for slight adjustment of the axial displacement of the push-pull rod 3 using the spiral track, achieving fine adjustment of the distance between the clamping block 4 and the clamping part 13. This further optimizes the clamping force on the endotracheal tube, ensuring that the clamping effect is stable without causing excessive pressure on the outer wall of the tube.

[0031] like Figure 4The diagram shown is a partial structural schematic of the locking block in the unlocked push-pull state in this embodiment. To improve the fit between the clamping block 4 and the outer wall of the endotracheal tube and ensure uniform distribution of clamping force, a first clamping arc surface 42 is provided on the side of the clamping block 4 away from the push-pull rod 3. The curvature of the first clamping arc surface 42 is adapted to the curvature of the outer wall of the endotracheal tube. When the clamping block 4 approaches the endotracheal tube, the first clamping arc surface 42 can fully fit with the outer wall of the endotracheal tube, which can avoid excessive local pressure leading to tube damage. At the same time, it increases the contact area to improve clamping stability and prevent the tube from sliding locally during clamping.

[0032] Optionally, to further enhance the anti-slip effect between the first clamping arc surface 42 and the outer wall of the endotracheal tube, a plurality of friction grooves 421 are provided on the first clamping arc surface 42. The friction grooves 421 are distributed along the arc direction or axial direction of the first clamping arc surface 42, which can disrupt the smooth contact interface between the first clamping arc surface 42 and the outer wall of the tube, increasing the coefficient of friction between the two. When the patient's agitation causes the tube to tend to slide, the friction grooves 421 can form mechanical resistance, effectively preventing the tube from sliding, which is especially suitable for scenarios where patients are frequently agitated, such as during the anesthesia recovery period or when consciousness is impaired.

[0033] Furthermore, to achieve bidirectional clamping of the endotracheal tube and improve the symmetry and stability of the clamping, a second clamping arc surface 131 is provided on the side of the clamping part 13 near the clamping block 4. The curvature of the second clamping arc surface 131 also matches the curvature of the outer wall of the endotracheal tube. When the clamping block 4 moves toward the clamping part 13, the endotracheal tube first comes into contact with the second clamping arc surface 131, and then the first clamping arc surface 42 and the second clamping arc surface 131 together wrap around the outer wall of the endotracheal tube, so that the clamping force is applied evenly from both sides of the tube. This avoids tube displacement or tilting caused by unilateral clamping, ensures that the tube always maintains the preset fixed posture, and improves the coaxiality of the tube fixation.

[0034] like Figure 2 As shown, to facilitate the pushing and pulling operation of the push-pull rod 3 by medical staff, an operating handle 6 is provided at the end of the push-pull rod 3 away from the clamping block 4. The size of the operating handle 6 is larger than the diameter of the push-pull rod 3, which can increase the contact area between the hand and the push-pull rod 3, making it easier to apply force and reducing the operational intensity of medical staff during long-term or repeated adjustments; at the same time, the outer wall of the operating handle 6 is provided with anti-slip texture, which is distributed around the circumference of the operating handle 6, to prevent the hand from sliding relative to the operating handle 6 when applying force, ensuring that the external force can be accurately transmitted to the push-pull rod 3, avoiding the sudden sliding of the push-pull rod 3 due to hand slippage, which would affect the clamping effect, improve operational safety, and is especially suitable for rapid adjustment in emergency situations.

[0035] To improve patient comfort when wearing the fixation device 1 and reduce pressure on the patient's facial skin, a flexible padding layer 7 is provided on the side of the fixation device 1 facing the patient's face. The flexible padding layer 7 covers the entire area of ​​the fixation device 1 in contact with the face. Its material can be medical-grade sponge or medical-grade silicone, possessing good softness and breathability. This reduces the risk of pressure sores caused by direct contact between the rigid device and the skin, improving patient comfort and reducing discomfort from prolonged wear. Optionally, the flexible padding layer 7 is detachably connected to the fixation device 1, such as with Velcro or clips. After use, the flexible padding layer 7 can be removed from the fixation device 1 for separate cleaning and disinfection, meeting medical hygiene requirements, avoiding cross-infection, and facilitating subsequent replacement with a new flexible padding layer 7 to ensure hygiene after each use.

[0036] The working process of the device in this embodiment is as follows: First, the flexible pad 7 is installed on the side of the fixator body 1 facing the face. Then, the fixator body 1 is fitted to the patient's face, aligning the installation opening 11 with the patient's mouth. The medical strap 2 is wrapped around the patient's head or neck, and the strap length is adjusted to a suitable tension to ensure that the fixator body 1 is stably fitted to the face without significant pressure. The endotracheal tube is passed through the installation opening 11 and inserted into the patient's airway to a preset depth. At this time, the operating handle 6 is pushed towards the clamping part 13 to operate. The handle 6 drives the push-pull rod 3 to slide along the mounting part 12. The clamping block 4 moves synchronously with the push-pull rod 3. The guide rail 41 slides along the guide protrusion 14 to maintain the moving direction of the clamping block 4. When the first clamping arc surface 42 and the second clamping arc surface 131 are in contact with the outer wall of the endotracheal tube and form a suitable clamping force, the push-operating handle 6 is stopped. The elastic element pushes the locking block 5 to move, so that the limiting part 51 automatically embeds into the corresponding limiting groove 31 on the push-pull rod 3, thereby completing the locking of the push-pull rod 3 and thus realizing the fixation of the endotracheal tube.

[0037] When it is necessary to adjust the position of the endotracheal tube or remove the tube, move the locking block 5 away from the push-pull rod 3 so that the limiting part 51 is disengaged from the limiting groove 31; pull the operating handle 6 away from the clamping part 13, and the push-pull rod 3 will drive the clamping block 4 to disengage from the endotracheal tube, releasing the clamping state; after adjusting the position of the tube or removing the tube, the above clamping steps can be repeated to re-fix it, or the medical strap 2 can be loosened to remove the main body 1 of the fixator, and then the flexible pad 7 can be removed for cleaning and disinfection.

[0038] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A staggered double-track quick-locking endotracheal tube fixation device, characterized in that, include: The main body of the fixation device (1) is used to fit the face and has an installation opening (11) corresponding to the patient's mouth. The installation opening (11) has an installation part (12) and a clamping part (13) on its opposite side walls. The medical bandage (2) is fixedly connected at both ends to the two ends of the fixation body (1) to limit the displacement of the fixation body (1) relative to the patient's face; A clamping mechanism is provided on the main body (1) of the fixer and corresponding to the mounting opening (11) for clamping the endotracheal tube; The clamping mechanism includes: Push-pull rod (3), which is slidably connected to the mounting part (12); Clamping block (4) is located at one end of the push-pull rod (3). The clamping block (4) can move close to the clamping part (13) under the sliding drive of the push-pull rod (3) so as to cooperate with the clamping part (13) to clamp the endotracheal tube.

2. The misaligned double-track quick-locking endotracheal tube fixation device according to claim 1, characterized in that, The upper inner wall of the mounting opening (11) is provided with a guide ridge (14) extending along the sliding direction of the push-pull rod (3); the upper side of the clamping block (4) is provided with a guide slide rail (41) adapted to the guide ridge (14), and the guide slide rail (41) and the guide ridge (14) slide together.

3. The misaligned double-track quick-locking endotracheal tube fixation device according to claim 1, characterized in that, The push-pull rod (3) has several axially spaced limiting grooves (31); a locking block (5) is slidably connected to the mounting part (12), the sliding direction of the locking block (5) is perpendicular to the axial direction of the push-pull rod (3), the locking block (5) is provided with a limiting part (51) that is adapted to the limiting groove (31), the limiting part (51) can move into any of the limiting grooves (31) under the sliding drive of the locking block (5) to limit the position of the push-pull rod (3) relative to the mounting part (12).

4. The misaligned double-track quick-locking endotracheal tube fixation device according to claim 3, characterized in that, An elastic element is provided between the locking block (5) and the mounting part (12), and the elastic element is used to provide an elastic force to push the locking block (5) to slide into the limiting groove (31).

5. The misaligned double-track quick-locking endotracheal tube fixation device according to claim 4, characterized in that, Several of the limiting grooves (31) are arranged sequentially along the axial direction of the push-pull rod (3) and connected end to end to form a spiral limiting structure.

6. The misaligned double-track quick-locking endotracheal tube fixation device according to claim 1, characterized in that, The clamping block (4) has a first clamping arc surface (42) on the side away from the push-pull rod (3) to fit the outer wall of the endotracheal tube.

7. The misaligned double-track quick-locking endotracheal tube fixation device according to claim 6, characterized in that, The first clamping arc surface (42) is provided with several friction grooves (421) to increase the friction between the first clamping arc surface (42) and the outer wall of the endotracheal tube.

8. The misaligned double-track quick-locking endotracheal tube fixation device according to claim 7, characterized in that, The clamping part (13) has a second clamping arc surface (131) on the side near the clamping block (4), and the second clamping arc surface (131) is used to clamp and fit against the outer wall of the endotracheal tube.

9. The misaligned double-track quick-locking endotracheal tube fixation device according to claim 1, characterized in that, The push-pull rod (3) has an operating handle (6) at one end away from the clamping block (4), and the outer wall of the operating handle (6) has anti-slip texture.

10. The misaligned double-track quick-locking endotracheal tube fixation device according to claim 1, characterized in that, The fixation body (1) has a flexible pad (7) on the side facing the patient's face. The flexible pad (7) is a medical sponge pad or a medical silicone pad. The flexible pad (7) is detachably connected to the fixation body (1).

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